Air Brakes #1
Air Brakes Endorsement Test | New Mexico 2026 #1 Page 4 of 4
Train for FREE online with our New Mexico CDL air brake test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a NM Class A/Class B driver license in 2026, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that the requirements for CDL may vary from state to state.
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19 . Which of the following is not part of a vehicle’s air brake system?
Components of an air brake system include an air compressor, an air compressor governor, air storage tanks, air tank drains, an alcohol evaporator, a safety valve, a brake pedal, foundation brakes, supply pressure gauges, an application pressure gauge, a low air pressure warning signal, a stop light switch, a front brake limiting valve (on some older vehicles), spring brakes, and parking brake controls.
20 . If the safety relief valve in an air brake system is releasing air:
The safety relief valve in an air brake system releases air if necessary to prevent pressure in the system from becoming too high. If the valve starts releasing air, there is something wrong. Have a mechanic fix the problem.
21 . When parked on a flat surface, you should:
When parking on a level surface, you should use wheel chocks. If the vehicle is not equipped with spring brakes, this is essential to prevent the trailer from moving.
22 . What does an air compressor do in an air brake system?
In an air brake system, the air compressor pumps air into the air storage tanks. The air compressor is controlled by the air compressor governor.
23 . The air storage tanks:
The air storage tanks in an air brake system store compressed air to be used for braking. They hold enough air for the brakes to still be used several times if the compressor stops working.
24 . What can happen if the air pressure gets too low in an air brake system?
Pressing and releasing the brake pedal unnecessarily can let air out of the braking system faster than the compressor can replace it. Air brakes may cease to work effectively if the pressure becomes too low.
25 . If the low air pressure warning signal comes on in a vehicle with air brakes, the driver should:
If the low air pressure warning signal comes on while you are operating a vehicle with air brakes, you should stop and safely park the vehicle as soon as possible. It is essential that you are able to stop safely while you still have some braking power remaining.
See the exact questions that will be on the 2026 New Mexico DMV exam.
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Lillian MCcranie explains how our CDL study guide was helpful in passing the exam and recommends it to everyone.
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2026 New Mexico | Frequently Asked Questions
To secure a CDL Bus endorsement in New Mexico, you must first hold a valid Commercial Driver's License (CDL). Then, you need to pass the Passenger Vehicles endorsement written test. You also need to pass a skills test in the type of vehicle you plan to drive. Training and experience driving buses are highly recommended before taking these tests.
To obtain a CDL Bus License in New Mexico, you need a valid driver's license, pass a medical examination and vision test. Then, you must pass the General Knowledge test, the Passenger Transport test, and the School Bus Endorsement test. Lastly, you must successfully complete a road skills and driving examination in a bus. Training courses are highly recommended.
While specific experience or training is not legally required for a CDL Bus endorsement in New Mexico, it's highly recommended. Training can help you pass the required written and skills tests. Some employers may also require or prefer drivers with professional training or prior experience. Check with potential employers for their specific requirements.
CDL Bus licenses fall into three classes in New Mexico: Class A, Class B, and Class C. Class A doesn't typically apply to buses. Class B is for vehicles that can carry over 24 passengers, including the driver. Class C is for smaller vehicles carrying 16 to 23 passengers, including the driver. Each class requires different tests and endorsements based on the vehicle's size and type.
No, you cannot use your personal vehicle for the CDL Bus driving test in New Mexico. The vehicle you use for the test must match the class of CDL license you are applying for. In this case, you should take the test in a commercial bus. Some training schools provide vehicles for testing purposes.
During the CDL Bus driving test, you'll be evaluated on pre-trip inspections, basic vehicle control, and on-road driving. This includes checking safety equipment, demonstrating turns, stops, and starts, proper lane changes, following traffic signals, and safely navigating through traffic. The examiner will also check your ability to manage bus-specific tasks like loading/unloading passengers.
Yes, there are additional medical prerequisites for a CDL Bus endorsement in New Mexico. Applicants must pass a Department of Transportation (DOT) medical examination, which includes vision and hearing tests. The exam also evaluates physical abilities necessary for commercial driving, such as blood pressure levels, neurological function, and cardiovascular health.
No, it's not permissible to transport passengers without a valid CDL Bus endorsement in New Mexico. Operating a commercial vehicle designed to carry more than 16 passengers, including the driver, without the proper endorsement is illegal and can result in hefty fines, license suspension, or even jail time.
Yes, the CDL Bus endorsement can be added to your existing CDL. You don't need to apply for a new license. However, you will need to pass the passenger transport test and a skills test in a passenger vehicle. In some cases, depending on the size of the bus, you may also need a school bus endorsement.
Yes, there are restrictions for drivers with a CDL Bus endorsement in New Mexico. These include not having more passengers than the vehicle is designed to carry, maintaining a clean driving record, and adhering to specific federal regulations regarding rest periods and hours of service. Additionally, drivers are subject to random drug and alcohol testing.
